Guard for presses.



n. F. IDE & M. WEST.

GUARD ron PRESSES. APPLICATION FILED MM- 7, 19:4.

Patented Jan. 4, 1916.

2 SHEETS-SHEET l n. F. lDE & n. M.WEST.

GUARD FOR PRESSES. APPLICATION man MAR. 1, m4.

1,166,591. Pate ntedflJ'zinA, 1916.

2 SHEIETSSHEET 2.

WWW 5 7' W ROY F. for: AND ROBERT M. w'nsr, or DETROIT, MI HIGAN.

GUARD son rnnssns.

Application filed March 7, 1914. Serial No. 823,070.

To all whom it may concern:

Be it known that we, ROY F. Inn and ROB- nn'r M. V fns'r, citizens ofthe United States of America, residing at Detroit, inthe county of\Vayne and State of Michigan, have invented certain new and usefulImprovements in Guards for Presses, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to a guard for presses or similar machinery forthe purpose of protecting the hand and arm of the operator thereof fromaccidental injury.

The particular form herein disclosed is shown in conjunction with aprinting press although it may be adapted for use with 'tremities of thelatter.

any machine which has cooperating plates or jaws which swing or move theone toward the other. l I

The invention consists in the matters hereinafter set forth and moreparticularly.

pointed out in the appended claims.

Figure 1 is a view of a press provided with a guard embodying featuresof the invention; and Fig. 2 is a View in detail of the guard removedfrom the members.

Referring to the drawings a pair of oppositely disposed bars 1 of anyconvenient type that afford proper guidance for a pair of reciprocatingmembers 2, arranged to be secured as by cap screws 3 or the like on themargins of a platen 4 of standard type.

printing press 5 that is herein shown dia grammatically with partsomitted. A pair of lever arms 6 are pivoted at their inner ends tosuitable blocks 7 which are arranged to be adjustably clamped as by setscrews 8 to a suitable part of the press. Links 9 articulate the guidemembers 2 to the lever arms 6, pivotal connection 10 between the' linksand levers being between the ex- Anti-friction rollers 11 or othersuitable means are arranged on the levers to lie in the planes ofmovement ofa pair of knock off arms 12 each of which is clamped to amoving member 13 of the press. This member may be any part which is sodisposed that when the platen 4 approaches its cooperating memberindicated at 14, the engagement of the arms with the rolls 11 operatesthe levers 6 and the guides 2 to move the latter up and thereby raise aguard 15 which connects the correspond ing portions of the guides 2.This guard rod is so actuated that it underlies the. arm

effect this operation.

of the operator whenthe latter is engaged in feeding the press andthereby throws the same upwarda sufficient distance to. withdraw thehand from the space between the platen 4: and the cooperating member 14:

when the press is about to make an impress, the device being so timedthat removal of the operators hand is effected in ample season toprevent ln ury. The parts are here shown as if returning by gravity tothe original position when the press opens. understood that springs orcounterweights It is to be Specification ofIIette'rs Patent. l PatfitedJanfli, l l i may be added if desired to more positively construction amachine of this type which 1S equipped .wlth a guard of this charactercannot injure the operator when the latter.

is feeding the machine in the usual manner as the device pushes the handaway and positively prevents admission or retention of the hand in thedanger zone.

As a result of this One feature of the device isits adjustabill ity to,presses and machines of difierent types, the disposition of the partsbeing such that adjustments to obtain different speeds of movementarejfeasiblea Obviously, changes in the details of construction may bemade without departing from thespirit of our invention and we do notcare to limit ourselves to any particular form or arrangement of lparts. What we claim is 1. A guard for presses and similar inachinesthat have cooperating members reciprocable toward and from each othercomprising guides adapted to be secured to one of the cooperatingmembers, an arm lifting guard bar, members reciprocating in the.

guides and carrying the guard bar, members adapted'to be pivotallyattached adjustably to a press or the like and articulated to thereciprocating members, and lznock off mem bers adjustably secured to theother cooperating member and adapted to intermittently move the membersarticulated to the reciprocating members.

2. The combination with a machine having cooperating members that moveto and from each other on a main frame with guides adapted to be securedto one of the cooperating members, an arm lifting guard bar, membersreciprocating in the guide and carrying the guard bar, pivot blocksadapt- 'li ed to be a'djustably secured to astationary part of themachine, lever arms pivoted at their inner ends to said blocks, linksconnecting the reciprocating members each In testimony whereof We a'lfixour signa- With a companion lever, antifriction rollers tures inpresence of two Witnesses. acljustably mounted on the outer ends of theROY F. IDE. levers, and knock off arms carried by the ROBERT M. NEST.

" other reciprocating member adapted to in Witnesses:

termittently oscillate the levers simulta- G. R. STICKNEY, neously. A.M. DORR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

